/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.andware.volley.toolbox;

import com.andware.volley.NetworkResponse;
import com.andware.volley.Request;
import com.andware.volley.Response;
import com.andware.volley.Response.ErrorListener;
import com.andware.volley.Response.Listener;

import java.io.UnsupportedEncodingException;

/**
 * A canned request for retrieving the response body at a given URL as a String.
 */
public class StringRequest extends Request< String > {
    private final Listener< String > mListener;

    /**
     * Creates a new request with the given method.
     *
     * @param method        the request {@link Method} to use
     * @param url           URL to fetch the string at
     * @param listener      Listener to receive the String response
     * @param errorListener Error listener, or null to ignore errors
     */
    public StringRequest ( int method, String url, Listener< String > listener,
                           ErrorListener errorListener ) {
        super ( method, url, errorListener );
        mListener = listener;
    }

    /**
     * Creates a new GET request.
     *
     * @param url           URL to fetch the string at
     * @param listener      Listener to receive the String response
     * @param errorListener Error listener, or null to ignore errors
     */
    public StringRequest ( String url, Listener< String > listener, ErrorListener errorListener ) {
        this ( Method.GET, url, listener, errorListener );
    }

    @Override
    protected void deliverResponse ( String response ) {
        mListener.onResponse ( response );
    }

    @Override
    protected Response< String > parseNetworkResponse ( NetworkResponse response ) {
        String parsed;
        try {
            parsed = new String ( response.data, HttpHeaderParser.parseCharset ( response.headers ) );
        } catch ( UnsupportedEncodingException e ) {
            parsed = new String ( response.data );
        }
        return Response.success ( parsed, HttpHeaderParser.parseCacheHeaders ( response ) );
    }
}
